The nepo-brat son of “Walking Dead” star Norman Reedus uttered a disturbing threat Sunday — one day after he was charged with beating and choking his girlfriend inside the couple’s Manhattan apartment.

“You want to watch me kill myself?” 25-year-old Mingus Lucien Reedus asked The Post as he stepped outside.

The chiseled model, whose mom is former Victoria’s Secret angel Helena Christenson, later fled his West 16th Street pad wearing the same green shorts and black T-shirt he wore in court a day earlier, with two pals in tow and his cat in a bag slung over his shoulder. 3

Reedus refused to answer any questions.

Manhattan prosecutors said the younger Reedus got into a spat with his 33-year-old beau on Friday night, and allegedly kicked and choked her so hard he lifted her off the

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